I agree. I personally don't like multi-doctor stories; aside from the gimmick of having past actors show up they usually have very little substance to them.
^^ That's so funny! You say that like they happen all the time when they've only happened 3 times in the past 50 years (within the actual show).
Each time was very different from the other times. So, it's pointless generalizing about them. Even if you didn't like those specific stories, it's possible you'd like the next one.